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Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

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Old 01-27-13, 09:18 PM   #1
Tandem Tom
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Adjusting an Eccentric-Best Tool?

I have an Allen Wrench that I modified for adjusting the eccentric. I cut down the "short leg" . But I find that I fumble around trying to adequately tighten the allen screws. I think it is a 4 or 5mm wrench.
Maybe if I could find one that had an extra long "long leg" and then modified it.
Anyone have any suggestions?
BTW we ride a Co-Motion Speedster.
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Old 01-28-13, 06:34 AM   #2
CGinOhio
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Co-Mo sells a "long stubby" hex wrench for adjusting their eccentrics:
http://www.co-motion.com/index.php/p...bby-hex-wrench
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Old 01-28-13, 07:23 AM   #3
Tandem Tom
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Thanks! I "thought" I had been all through their web site!
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Old 01-28-13, 10:37 AM   #4
ksisler
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Might be time to consider an upgrade to one of those new Bushnell eccentrics ... Rodbikes makes/sells them. Most of the tandem specific web stores carry them also, but I would want you to read the background stories on the Rodbike site or perhaps talk to them to ensure I haven't mislead you.
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Old 01-28-13, 07:21 PM   #5
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Quote:
Originally Posted by CGinOhio View Post
Co-Mo sells a "long stubby" hex wrench for adjusting their eccentrics:
http://www.co-motion.com/index.php/p...bby-hex-wrench
For my Speedsters I cut off the short end on a standard Bondhus hex wrench. It now looks like the "long stubby". The ball end works good at an angle but you have limited torque with it. After starting to loosen the bolts with the short end you can loosen them farther with the long ball end. You can also snug them up with the long end then tighten them with the short end.

Dave
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Old 01-29-13, 12:19 AM   #6
Clarabelle
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Quote:
Originally Posted by CGinOhio View Post
Co-Mo sells a "long stubby" hex wrench for adjusting their eccentrics:
http://www.co-motion.com/index.php/p...bby-hex-wrench

Thanks for the tip. I needed one for my Mocha.
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Old 01-29-13, 08:12 AM   #7
Tandem Tom
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FWIW I had some thing on order at Fastenhal so I oredered a long arm 4mm Allen wrench. I will cut the short arm down. Total cost $.34!
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Old 01-29-13, 01:27 PM   #8
Bent In El Paso
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+1 on what Tandem Tom said...

I took a 4mm allen wrench and ground down the short end to a workable length. Works like a charm.

Last edited by Bent In El Paso; 01-29-13 at 01:39 PM.
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